I'm working on an Add-In for ArcMap 10.0 in .NET version 3.5. This add-in works fine with ArcMap 10.0. Now I want to use this add-in in ArcMap 9.3. But I couldn't add Add-In .dll file in ArcMap 9.3.
Is there any process to use ArcMap 10.0 Add-In in ArcMap 9.3?